Device for removing stuck drills.



R. C. CAMERON.

DEVICE FOR REMovlNG sTUcK DRILLs.

APPLICATION FILED OCT. I?, I9I4.

Patented Feb. 8, 1916.

IIIIIII IIIIIIIIII IIIIIIIII W/-T/VESSES I #mm e fama/aff TTORNEIS ROBERT CLYDE CAMERON 0E eoLDEIELD, NEVADA.

DEVICE FOR REIVIVING STCK DRILLS;

Specification. of Letters Patent.

Application led October 17, 1914. Serial No. 867,121.

T o all whom t may concern.'

Be it known that I, ROBERT CLYDE CAM- ERON, a citizen of the United States, and a resident of Goldfield, in the` county of Esmeralda and State of Nevada, have invented a new and. Improved Device for Removing Stuck Drills, of which the following is a full, clear, and eXact description.

My invention has for its object to provide a device of the character described having a sleeve with an outer thread with means for securing a drill in the sleeve so that the sleeve may beturned relatively to a second'lsleeve having an inner thread with which the first thread meshes. By this means it is possible Vto move the `first sleeve togetherA with the drill, longitudinally of the second mentioned sleeve', thereby withdrawing the drill.

Additional objects of the invention will appear in the following specification in which the preferred form of my invention is disclosed.

In the drawings similar reference characters refer to similar parts in all the views in which- Figure 1 is a sectional view showing how my invention is used; Fig. 2 is an enlarged end view of Fig. 1 showing lthe drill in section; and Figs. 3 and tare views showing a modified form of the invention.

referring to the drawings it will be seen that a member 5 is provided which has a foot 6 at one end for disposal against the rock 7 at an opening 9 in which a drill8 is disposed. This member 5 has a threaded opening 10 in which meshes a thread 11 on a sleeve 12 and it will be seen that when the sleeve 12 is secured to the drill 8 and is rrotated relatively to the member 5, the sleeve together with the drill, will be moved longitudinally of the member 5 and in this manner be withdrawn from the opening 9 in the rock 7.

The end of the sleeve 12 has a flange 13 which has an opening 14 which forms a continuation of the opening Vin the sleeve 12. Mounted on the flange 13 there is a disk 15 which has an annular shoulder 16 engaging the' periphery of the flange 13 which is also annular. The disk 15 is held mounted on the flange 13 by the lugs 17 which engage the inner face of the flange 13 and' which are secured to the disk 15 bv Vthe pins or bolts 18. The disk 15 like the flange 13, has an opening 19 through which the drin s 'is dispseaae disk 15121150 having a recess 20 which is' disposed at one side of the opening 19 and which is connected therewith. Ihe outer Vwallof this recess 2Q is eccentric in shape from the point 21 to the point 22 and relatively to the opening 19 beyond the point 22, the outer wall of theV recess 2O may be curved as at 23 substan-y tiallyconcentric with the drill. In that pQrtion ofk the recess 20 having the eccentric wall there is disposed a cam finger or wedge Patentedneb. e, 191e. l

24 which is pivoted by the pin 25, this pin 25 being secured tothe flange 13. It Will, therefore, be seen that when the disk 15 is rotated to the left that the cam finger or wedge 211 will be gripped between the Vdrill 8 and thedisk 15 to Alock the dril1 8 and the flange 13 tothe disk 15 so that withr the further rotation oflthe disk 15, by means'of bars inserted in the openings 26, the drill 8 will be held to the sleeve 12 while the sleeve 12 is rotated relatively to the member 5,

thereby moving the sleeve 12,' and the drill 8 longitudinally ofthe member 5. The member 5 is prevented from rotating with the sleeve 12 by means of the pressure at its foot 6 against the rock 7. Y

`When the disk 15 is rotated to the right it will move toa position where the cam finger or wedge 24 "will be V disengaged from the gripping contact betweenl the 4drill 8 and the disk 15 to permit'the operator to free the sleeve-V12 and the disk 15 from the drill toimake it possible for the operator to obtain another grip on the drill nearer its point and when the drill has been completely removed lfrom the opening 9 in4 the rock' 7 to free 'the ldevice so thatit may be used atfanother'timeor place. y

In order to takethestrain off of the cam finger or wedge 2li, the rear of the cam finger or wedge 24j is curved at 26 concentrically with the pin 25 and a support 27 is provided .which is V secured to the flange 13 and which is disposed in the opening 20, this Yso support 27 having a' face 28which ,is curved concentric with the pin 25V and which is engaged by thecurved end26 of thev cam finger or wedge 24;. f

In'Figs. 3 and/4g a modied formof the invention is disclosed. In this form of the invention the sleeve 12a has a thread similar to that shownin Fig. 1 which meshes in a threaded opening 10a in a member 5a, the

sleeve 12a havinga flange 13EL with openings 26a in which a bar may be inserted to permit the convenient turning of Ythe flange lfL which is secured to the sleeve 12 and which will, therefore, serve'to rotatethe sleeve 12a. es will be seen by referring'to-thedrawings the flange 13 has an opening 14a ywhich is a continuation of `the opening in ythe sleeve. The flange 13a also has a recess 29 which is curvedY away from each'side ofthe opening 14a at 30 and which has a groove 31 with sides'32 which are at angles withitsrear 33. As `shown in Fig. 3 of the drawings, the grooveltapers inwardly, a wedgeebeing provided `which-iitsthe'recessandthe groove l-sothat lwhen it is drivenhome -it will secure-the'drillS to the lflange 13"l and to the sleeve12a,thereby making certa-in'of the ro tation of the-drill 8 with Lthe rotation of vthe flange 13a.

Having thus described 'my invention I claimasnew Vand desire `to secure by 'Letters Injaten'tr:

1. In a device of "the class described, a sleeve 'having an outer thread, a meniber having a 'threaded opening in which Vthe thread on the sleeve meshes, a flange at an end olf "the sleeve `with an opening register'- ing with the opening in the sleeve, a disk rotatably mounted on the flange and provided with an `opening registering with the opening in the `flange, and vhaving a recess at One side 'ot ,the opening, `the outer wall ot which is.eccentric relatively 'tothe axis of the opening, and a `cam finger pivoted to 'the vflange and disposed in the recess in the disk to be embraced between the disk at 'the outer wall of the recess Yand a. drill which may be disposed through the .opening 2. In a device of `the .class described, a sleeve having an outer thread, a member having a threaded opening in which the thread on the sleeve meshes, a disk for rotating on the sleeve and provided with an opening registering with the opening in the sleeve, and a recess at one side o'i' the open ing, the outer wall iof which diverges relatively to the plane of the opening in Ythe sleeve, and a cam disposed in lthe recess for the purpose specified.

3. In a device of the class described, a sleeve having an outer thread, a member having a threaded opening in which the thread on the sleeve meshes, a disk for r0- tating on the sleeve and provided with an opening registering with the opening in the sleeve, Yand a recess at one side -Of the opening, the outer wall of which diverges relatively to the plane of the opening in the sleeve, and a pivoted cam disposed in the recess ;Eor the purpose specified.

l 4i. In a device of .the class described, a

sleeve vhaving an outer thread, a member in the sleeve, a disk rotatably mounted on ,the flange and provided withV an opening registering with the opening in the flange, andhaving a-recess at one side of the opening, the outer wall of which is eccentric relatively to the aXis'o-'the opening in the flange, and-a 'cam'finger pivoted to the `liange and disposedin the recess, lthe rear of the cani iingerbeing curved concentric with its pivot and a support for the cam'nger secured te the i'irst disk and having a curved tace with which'the rear `ofthe curved finger engages.

5. Ina device of the class described, a member having a'threaded opening, a sleeve having an outer thread meshing in the threaded opening, a disk secured to the sleeve and 'provided with an opening registering with the opening inthe sleeve and having a tapering recess, and a wedge disposed in the recess normally Vembraced by the disk, and a drill `disposed in the opening.

.6. AIn a device of the class described, a member having a threaded opening, a sleeve having an outer thread meshing .in the threaded opening, a disk mounted on the sleeve and provided with an opening tering with the opening in the sleeve and having a recess connected with the opening and tapering longitudinally of the sleeve, the recess in cross section curving outwardly from the opening and having a groove the sideso'f which are disposed at an angle to its end and a wedge disposed in and fitting the recess for the Ipurpose specified.

'7. In a device of the class described, a sleeve 'having .an outer thread, member having .a threaded opening in which the thread on the sleeve meshes, a Vdisk disposed substantially .coaxially with the sleeve and rotatable relatively thereto, the disk having an opening registering with the opening in the sleeve, and a recess at one side of the opening, ythe Youter wall of the recess being eccentric rrelatively to the axis of the sleeve, a cam finger pivoted relatively to the sleeve, and disposed in the Arecess in the disk to be embraced between the disk at the outer wall of the recess and a drill which may be disposed through the opening in the sleeve.

In testimony whereo-ic I have signed my naine to this specification in the presence ot the -two subscribing witnesses.

ROBERT CLYDE CAMERON.

Witnesses:

HARRY vGEORGE MAYER, hABnL MATHEws.

lCopies `of this patent may be obtained for live cents each, by addressing the Commissioner of Patents,

' Washington. D. 04 

